St Columb

St Columb may refer to:
 * Columba or St Columb of Scotland
 * St Columb's Cathedral, Derry, Northern Ireland
 * St Columb's College, Derry, Northern Ireland
 * Columba the Virgin or Saint Columba the Virgin or St Columb of Cornwall
 * St Columb Canal, in Cornwall, England
 * St Columb Major, town in Cornwall, England
 * St Columb Minor, village in Cornwall, England
 * St Columb Road, village in Cornwall, England
 * St Columb Porth, Cornwall, seaside village in Cornwall
 * Lady Dona St Columb, a character in Frenchman's Creek by Daphne du Maurier
 * The Monastery of St Columb, a book by Regina Maria Roche